## Alternating currents |

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alternating currents alternating-current ammeter angle armature busbars cent circuit diagram coil component conductor connected constant copper losses core corona corresponding current and voltage current flowing current wave curves diagram in Fig dielectric direct currents direct-current effective values electric circuit energy equal equation equivalent exciting current field excitation frequency full load harmonic Hence hysteresis impressed voltage increase induction motor instantaneous values insulation iron kv.a leakage lines of force load current machine magnetic field magnetic flux magnitude mains neutral ohms operating pole power factor primary problem produced pulsations quadrature reactive power receiver voltage regulation relay represented resistance rotary converter rotating rotor secondary series circuit short-circuit shown in Fig sine wave single-phase space stator synchronous condenser synchronous motor synchronous speed terminal voltage three-phase time-phase torque transformer transmission line two-phase vector diagram vibrating voltage and current voltage gradient voltage wave voltmeter volts wattmeter watts winding wire zero